Two point charges of the same magnitude but opposite signs are fixed to either end of the base of an isosceles triangle, as the drawing shows. The electric field at the midpoint (M) between the charges has a magnitude (EM). The field directly above the midpoint at point (P) has a magnitude (EP). Find the angle (α) in the drawing if the ratio of (EM/EP) = 10.0.
https://general.physics.rutgers.edu/gifs/CJ/18-84.jpg

Question

Two point charges of the same magnitude but opposite signs are fixed to either end of the base of an isosceles triangle, as the drawing shows. The electric field at the midpoint (M) between the charges has a magnitude (EM). The field directly above the midpoint at point (P) has a magnitude (EP). Find the angle (α) in the drawing if the ratio of (EM/EP) = 10.0.
https://general.physics.rutgers.edu/gifs/CJ/18-84.jpg